YES!I did just ask this. As you might know, I hate trolls, and some of them should go play in the big Poke-Ball in the Sky. Now back to the question. What are some good Troll Killers that can eliminate dem darn trolls before and hair gets ripped out. Can I get movesets and items? Thanks.

Eat it MOFO

This... is my new personal bodyguard and an old favorite of mine :3. This guy is meant for one thing, killing Godzillia. Seriously tho, any troll that doesn't focus on burning it right off the back can kiss all of it's dignity goodbye . The raw power breaks through walls like nothing else in OU, and with that extraordinary typing and coverage little outside breloom and infernape can stop it. Choice Scarf lets you do a little counter trolling, surprisingly out speeding and OHKOing the first thing that comes out not named Ferrothorn with outrage. Ferrothorn also gets slapped with a decent 2HKO after spikes, assuming leech seed aint out. You could use band for that extra power, but the wall would have to switch in or be considerable slower than Kyu, but the extra power is noticeable. Lum berry can be used if you wish to avoid burning over a boost to get KOs on salabye and sligilpyh etc:

Thunderus-T @ Choice Specs

Trait: Volt Absorb
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature

Thunder/Thunderbolt

Hidden Power Ice

Focus Blast

Flash Cannon/Dark Pulse

Weeeeeel to kill a troll you must either taunt and destroy it or just destroy it in one hit. I prefer killing trolls slowly but I am just in the mood for devastating power right now so here is Thunderus-T. The choice specs set is rather rare compared to it's other options though it must be noted that there is nothing such as a living troll or Pokemon after one beautiful choice specs boosted hit from this Azure Dragon. You will most likely be wanting Thunder in your moveset just for that beautiful power. Thunder practically shocks the living day out of most Pokemon. Thunderbolt is a more reliable options when you are not in rain and will be doing massive damage anyways. Though Thunder is most recommended should you be in rain. Everyone likes to freeze a little there and a little there. Freezing trolls is equally fun and Hidden Power Ice enables you to freeze one of those annyoing trolls in the name of Gliscor. Choice Specs boosted Hidden Power Ice is a guaranteed OHKO...even a normal Hidden Power Ice OHKO's it. Focus Blast just a little blasting everywhere. Just here to deal with some trolls and also grants coverage. It's main purpose is to kill Ferrothorn, Heatran, Umbreon etc..Flash Cannon yay! Well it's just a cool move o.o, jk there is more. Flash Cannon is a nice move that will grant you coverage against Ice and Rock type Pokemon. Rock type troll such as Cradily are no more C:. Dark Pulse just for that extra dazzle of coverage and the one move that can bring down a top troll, Shedinja (thank you for pointing that out Slashy :3). Also a move to hit Ghost and Psychic types hard though Thunder can handle most Pokemon, even Cresselia bows down to it.

The next Pokemon I will recommend will be a non-legendary Pokemon,
just needed to add Thundurus because it is one deadly Pokemon that
should most definitely not be taking lightyl even in the realms of the
trolls for it's presence is stunning and it's Thunderbolts bring
Judgement upon all trolls

I kept my word and I will now suggest another troll killer

Espeon @ Leftovers

Trait: Magic Bounce
EVs:252 HP / 252 Def / 4 SpD
Bold Nature

Substitute

Calm Mind

Stored Power

Hidden Power Fighting

Thanks to Magic Bounce Espeon serves as one of the only few Pokemon that can outstall a troll instead of just KO it. Seeing as it can block every single move that a troll can bombard it with. Behind a Substitute Espeon becomes what I would like to call Troll Bane. Mainly because trolls usually don't carry any damaging move, behind a substitute, our little feline is more then just Impervious to any form of troll attack. Thanks to Magic Bounce she can now set up Calm Mind without fearing to be roared out seeing as Magic Bounce deflects that. However she must be wary of the Dragon Tail variants. With Stored Power wroking on turns and since it will take a few turns setting up Calm Mind the only thing left to do is to sweep every incoming troll for the power of this move will completely eviscerate not only trolls but any Pokemon switching into it. But then came the Dark type Pokemon,Hidden Power Fighting that sorry face of it. Done is done

Won't FEAR be awful against a lot of the trolls though? It ties against FEAR itself. Pranksters easily shut FEAR down through priority healing or priority Sub. FEAR sucks to begin with, but against the standard trolls I think it might be even worse than usual.

This guy's been built to take down one specific troll. Shuckle.
Super Fang bypasses the high defenses and weakens him so the other moves can finish him off. Raising Scrafty's attack might make this process quicker but there's no way I'm going to let that things Power Split destroy me.

I don't see Shuckle on teams much but he'd definitely be used on mine. Power Split from a Shuckle makes pretty much any sweeper useless and gives Shuckle better attacks. Add in a trick room and you'll outspeed pretty much everything. And his defenses will still be gigantic.

A very standard set for Ubers. Used to use this guy as a lot as a wall/troll killer. You dance and get a grace period from status problems with the Lum berry, then wreak shop with E-Speed. Shadow claw covers Lugia and you're pretty much free to use anything you wish for the 4th slot. EV spread allows it to be able to take a bunch of hits. Silk Scarf can boost E-Speeds power even more and Leftovers is for people not too concerned with problems.

My favorite Troll Pokemon is more of a traditional favorite, but still very valid:

Umbreon

Umbreon has two base Troll sets that I have seen thus far, but they are very good. The first is
(Brightpowder)
-Sand Attack
-Confuse Ray
-Screech
-Faint Attack

With this setup, it's pretty self-explanatory. Confuse ray, then screech to lower defense, sand attack to lower accuracy (brightpowder helps as well with this), then, for an extra piss-off factor, use the always-hit move faint attack.

Next one goes as follows:
(Leftovers)
-Dig
-Protect
-Rest
-Toxic

This one is similar to a toxic shuckle, which is always fun, but can still be usable. As soon as Umbreon hits the field, use toxic, then alternate between protect and dig, making sure that every 2/3 turns you won't get hit. Finally, when the time is necessary, use rest to restore your health.